TaxNo: 7275Cravenoceras gressinghamense
| Suborder: |
Goniatitina
|
| Superfamily: |
Neoglyphioceratoidea
|
| Family: |
Cravenoceratidae
|
| Subfamily: |
Cravenoceratinae
|
| Genus: |
Cravenoceras
|
| Species: | gressinghamense |
| Qualifier: | ss |
| Author: |
Riley in Brandon et al. 1995, p.352
|
| Lower Boundary: |
GBY E2a1--E2a2 (cowlingense--bisulcatum), 323.5 million years
|
| Upper Boundary: |
GBY E2a2--E2a3 (Eu.bisulcatum--yatesae), 323 million years
|